Self-adaptive column formwork slurry leakage prevention device and construction method thereof

Abstract

The self-adaptive column formwork slurry leakage prevention device comprises original column wood formworks, the four original column wood formworks are arranged on the periphery of a steel bar column in a surrounding mode, prefabricated formwork strips are arranged below the four original column wood formworks, and flexible sealing rubber pads are arranged below the prefabricated formwork strips; the vertical edge of the high-strength angle iron is parallel to and abuts against the lower end of the original column wood formwork, the horizontal edge of the high-strength angle iron is arranged above the prefabricated formwork strip, and the horizontal edge of the high-strength angle iron is fixedly connected with the prefabricated formwork strip; and the multiple upper fastening bolts are connected with the original column wood formwork on one side of the steel bar column through nuts correspondingly, and the lower ends of the upper fastening bolts are located above the horizontal side of the high-strength angle iron. The flexible rubber pads and the prefabricated formwork strips are additionally arranged at the bottoms of the steel bar columns, the rubber pads are compacted through the upper fastening bolts, gaps between the formwork strips and a floor slab can be effectively sealed, water and cement are prevented from seeping from the bottom during concrete pouring, and common quality problems such as grout runout, grout leakage and root rot are avoided.

Description

Technical Field

[0001] The invention relates to the field of building construction, and in particular to an adaptive column template anti-leakage slurry device and a construction method thereof. Background Art

[0002] In construction, wooden formwork is widely used due to its advantages such as light weight, easy processing and low price. At the same time, slurry running and leakage are also quality risks that need to be considered when setting up the formwork. Especially at the root of the column, due to the flatness of the concrete surface, there is often a gap between the bottom of the wooden formwork and the concrete, which leads to slurry running, leakage, root rot and other quality problems after concrete pouring. The common practice at the construction site is to control the flatness of the floor and inject mortar around the bottom of the formwork in advance, but the molding effect is average, the sensory perception is poor, and it consumes manpower and material resources.

[0003] The applicant's prior application CN107186866A proposed a bottom grouting process for a small prefabricated block shaped steel formwork, which belongs to the field of bottom grouting technology and specifically includes the following steps: step one, laying geotextile and rubber cushion on the concrete base; step two, placing the edge sealing angle steel 2 on one side of the shaped steel formwork 2, and the bottom plate surface of the shaped steel formwork 2 is 5 mm longer than the bottom surface of the edge sealing angle steel 2; step three, placing the assembled shaped steel formwork 2 on the rubber cushion. This patent ensures the softness of the base by adding geotextile and rubber cushion, so that the bottom of the formwork is in close contact to avoid leakage during concrete pouring, prevents hard contact between the formwork and the concrete base, and avoids damage to the concrete base. However, this patent is only applicable to the bottom grouting of the steel formwork, has a small application range, and cannot guarantee uniform force, which may cause the formwork to deform or the sealing to fail, and has a simple structure and cannot be adjusted according to actual conditions, and has poor flexibility and adaptability. Summary of the invention

[0004] The purpose of the present invention is to provide an adaptive column formwork slurry leakage prevention device to solve the above-mentioned problems in the prior art.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: an adaptive column formwork anti-leakage device, comprising an original column wooden formwork, four original column wooden formworks are arranged around a steel column, prefabricated formwork strips are arranged under the four original column wooden formworks, a flexible sealing rubber pad is arranged under the prefabricated formwork strips, a high-strength angle iron, the vertical edge of the high-strength angle iron is parallel to and abuts against the lower end of the original column wooden formwork, the horizontal edge of the high-strength angle iron is arranged above the prefabricated formwork strip, the horizontal edge of the high-strength angle iron is fixedly connected to the prefabricated formwork strip, an upper fastening bolt, and multiple upper fastening bolts are respectively connected to the original column wooden formwork on one side of the steel column through nuts, and the lower end of the upper fastening bolt is located above the horizontal edge of the high-strength angle iron.

[0006] In a preferred embodiment, the intervals between the multiple upper fastening bolts are no more than 20 cm, and the upper fastening bolts pass through two nuts in the vertical direction, and one side of the nuts is fixedly connected to the template.

[0007] In a preferred embodiment, the horizontal edge of the high-strength angle iron is arranged at an end away from the original column wood formwork, and the horizontal edge of the high-strength angle iron is arranged below the vertical edge of the high-strength angle iron. A portion of the prefabricated formwork strip is pressed below the cross-section of the original column wood formwork. The width of the portion of the prefabricated formwork strip away from the original column wood formwork is equal to the width of the horizontal edge of the high-strength angle iron. The lengths at both ends of the horizontal edge of the high-strength angle iron are respectively smaller than the length of the prefabricated formwork strip and the thickness of a piece of original column wood formwork. The area of ​​the flexible sealing rubber pad is equal to the area of ​​the prefabricated formwork strip.

[0008] In a preferred embodiment, a rotating head is arranged above the upper fastening bolt, and the diameter of the rotating head is larger than the inner diameter of the nut.

[0009] In a preferred embodiment, the length from the rotating head of the upper fastening bolt to the nut closest to the rotating head is greater than the distance from the horizontal edge of the high-strength angle iron to the ground.

[0010] In a preferred embodiment, the log column wood formworks are vertically arranged with each other, the thickness of the log column wood formworks is 15 mm, and the connection between the log column wood formworks forms an angle with a side length of 15 mm and an angle of 90°.

[0011] The present invention also provides a construction method of the above-mentioned adaptive column template anti-leakage slurry device, comprising the following steps: Step 1: Prepare high-strength angle iron, prefabricated formwork strips, flexible sealing rubber pads, and upper fastening bolts according to design requirements; Step 2: Place the vertical reinforcement accurately on the column position line; Step 3: Clearly pop up the column edge control line on the floor; Step 4: Lay the flexible sealing rubber pad evenly on the floor surface. The edge of the flexible sealing rubber pad should be aligned with the column edge control line; Step 5: Install the high-strength angle iron on the bottom prefabricated formwork strip, leaving a template thickness between the high-strength angle iron and the edge of the prefabricated formwork strip; Step 6: Install multiple upper fastening bolts at the bottom of the original column wooden formwork according to the size of the column. The spacing between the upper fastening bolts should not exceed 20cm and should be evenly distributed.

[0012] In a preferred embodiment, step 1: ensure that the specifications and models of the materials meet the requirements and are of qualified quality, inspect the materials, prepare the tools required for construction, inspect the integrity and accuracy of the tools, ensure that there are no factors that affect the construction quality at the bottom of the steel column, and at the same time, accurately lay out the position line of the steel column on the floor according to the design drawings, including the column side control line, so as to facilitate accurate positioning of subsequent construction; Step 2: The spacing, quantity and diameter of the steel bars must comply with the design specifications. Use wire to firmly tie the vertical steel bars to ensure the stability of the steel bar skeleton. During the tying process, pay attention to the joint position of the steel bars should comply with the specification requirements to avoid too many joints in the same section; Step 3: The control line should be clear and accurate, and the width should not be too wide; Step 4: Place the prefabricated formwork strip on the flexible sealing rubber pad, fit it tightly with the flexible sealing rubber pad, and use a level to check the flatness of the prefabricated formwork strip; Step 5: When installing, use a screwdriver or bolts to fix the high-strength angle iron to the prefabricated formwork strip; Step 6: The two nuts of the upper fastening bolts are pre-fixed on the original column wooden formwork. By rotating the rotating head, the upper fastening bolts can be moved up and down for adjustment. According to the gap between the high-strength angle iron and the flexible sealing rubber pad and the ground, adjust the upper fastening bolts of each column bottom one by one.

[0013] Compared with the prior art, the present invention has the following characteristics and beneficial effects: 1. The present invention adds a flexible rubber pad and a prefabricated formwork strip at the bottom of the steel bar column, and compacts the rubber pad through the upper fastening bolts, which can effectively seal the gap between the formwork strip and the floor slab, prevent water and cement from seeping out from the bottom during concrete pouring, avoid common quality problems such as slurry running, slurry leakage and root rot, significantly improve the molding quality of the concrete column, make the column surface smoother and more beautiful, reduce later repair work, and improve construction efficiency.

[0014] 2. The present invention arranges high-strength angle irons above the prefabricated formwork strips and the flexible sealing rubber pads. The high-strength angle irons can ensure that the bottom formwork strips and the flexible rubber strips are evenly stressed when the upper fastening bolt rods are tightened, thereby avoiding problems such as formwork deformation or sealing failure caused by uneven stress, extending the service life of the formwork and the device, and reducing construction costs.

[0015] 3. The present invention adjusts the contact tightness between the bottom high-strength angle iron and the floor surface by tightening bolts, and can be freely adjusted according to the flatness of the ground, so that the device can form a tight form in an adaptive state. Regardless of the flatness of the floor, the tightness of the bottom of the column formwork can be guaranteed, thereby improving the applicability and reliability of the device.

[0016] 4. The structure of the present invention is relatively simple, the components are easy to install, the entire construction process is easy to master, and no complicated construction technology and special tools are required. It can effectively shorten the construction period and improve construction efficiency, and has good application prospects in building construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0018] Figure 1 It is an overall schematic diagram of the present invention; Figure 2 It is a schematic diagram of the high-strength angle iron, prefabricated template strip and flexible sealing rubber pad of the present invention; Figure 3 The figure is a flow chart of the method of the present invention.

[0019] Figure numerals: 1 - original column wooden formwork, 2 - high-strength angle iron, 3 - upper fastening bolts, 4 - prefabricated formwork strips, 5 - flexible sealing rubber pads, 6 - nuts, 7 - rotating head. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention are described clearly and completely below. The embodiments of the present invention and all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0021] Embodiment 1: See Example Figures 1 to 3 As shown, an adaptive column formwork anti-leakage device of the present invention includes an original column wooden formwork 1, four original column wooden formworks 1 are arranged around the steel column, the original column wooden formworks 1 are vertically arranged between each other, the thickness of the original column wooden formworks 1 is 15 mm, and the connection between the original column wooden formworks 1 forms an angle with a side length of 15 mm, and prefabricated formwork strips 4 are arranged under the four original column wooden formworks 1, and a flexible sealing rubber pad 5 is arranged under the prefabricated formwork strips 4.

[0022] The vertical edge of the high-strength angle iron 2 is parallel to and abuts against the lower end of the original column wood formwork 1, the horizontal edge of the high-strength angle iron 2 is arranged above the prefabricated formwork strip 4, the horizontal edge of the high-strength angle iron 2 is fixedly connected to the prefabricated formwork strip 4, the horizontal edge of the high-strength angle iron 2 is arranged at the end away from the original column wood formwork 1, the horizontal edge of the high-strength angle iron 2 is arranged below the vertical edge of the high-strength angle iron 2, a part of the prefabricated formwork strip 4 is pressed below the cross-section of the original column wood formwork 1, the width of the part of the prefabricated formwork strip 4 away from the original column wood formwork 1 is equal to the width of the horizontal edge of the high-strength angle iron 2, the length of the horizontal edge of the high-strength angle iron 2 is respectively smaller than the length of the prefabricated formwork strip 4 by the thickness of a piece of the original column wood formwork 1 at both ends, and the flexible sealing rubber pad 5 is equal to the area 4 of the prefabricated formwork strip.

[0023] Multiple upper fastening bolts 3 are connected to the original column wooden formwork 1 on one side of the steel column through nuts 6 respectively, the lower ends of the upper fastening bolts 3 are located above the horizontal side of the high-strength angle iron 2, the intervals between the multiple upper fastening bolts 3 are no more than 20 cm, the upper fastening bolts 3 pass through two nuts 6 in the vertical direction, one side of the nuts 6 is fixedly connected to the formwork, a rotating head 7 is arranged above the upper fastening bolts 3, the diameter of the rotating head 7 is larger than the inner diameter of the nut 6, and the length from the rotating head 7 of the upper fastening bolt 3 to the nut 6 closest to the rotating head 7 is larger than the distance from the horizontal side of the high-strength angle iron 2 to the ground.

[0024] Embodiment 2: The construction method of the present invention: Step 1: According to the design requirements, prepare materials such as high-strength angle iron 2, prefabricated formwork strip 4, flexible sealing rubber pad 5, upper fastening bolt 3, etc. Ensure that the specifications and models of the materials meet the requirements and are of qualified quality. Check the materials, such as whether the strength of the high-strength angle iron 2 meets the standards, whether the size of the prefabricated formwork strip 4 is accurate, whether the flexible sealing rubber pad 5 is damaged, etc. Prepare the wrenches, screwdrivers, levels, tape measures and other tools required for construction. Check the integrity and accuracy of the tools, such as whether the opening of the wrench is appropriate, whether the level can normally display the horizontal state, etc. Clean up the construction site to ensure that there are no debris, dust and other factors that affect the construction quality at the bottom and around the steel column. At the same time, accurately lay out the position line of the steel column on the floor according to the design drawings, including the column side control line, so that the subsequent construction positioning is accurate.

[0025] Step 2: According to the design requirements, accurately place the vertical steel bars on the column position line. The spacing, quantity, diameter, etc. of the steel bars must comply with the design specifications. Use wire to firmly tie the vertical steel bars to ensure the stability of the steel bar skeleton. During the tying process, pay attention to the joint position of the steel bars should comply with the specification requirements to avoid too many joints in the same section.

[0026] Step 3: Clearly pop up the column edge control line on the floor to provide accurate positioning basis for subsequent template installation. The control line should be clear and accurate, and the width should not be too wide, generally controlled at about 1-2mm, so as not to affect the subsequent construction accuracy.

[0027] Step 4: Lay the flexible sealing rubber pad 5 evenly on the floor surface, and the edge of the flexible sealing rubber pad 5 should be aligned with the column edge control line. Ensure that the flexible sealing rubber pad 5 is in full contact with the floor surface without wrinkles, warping, etc., so as to effectively seal the gap between the prefabricated formwork strip 4 and the floor, and place the prefabricated formwork strip 4 on the sealing rubber pad 5. The prefabricated formwork strip 4 should be placed stably and fit tightly with the flexible sealing rubber pad 5. Use a level to check the flatness of the prefabricated formwork strip 4. If there is any unevenness, it can be adjusted by padding a thin iron sheet under the sealing rubber pad 5.

[0028] Step 5: Install the high-strength angle iron 2 on the bottom prefabricated formwork strip 4. The high-strength angle iron 2 is separated from the edge of the prefabricated formwork strip 4 by a template thickness to facilitate the placement of the vertical template, ensuring that the bottom prefabricated formwork strip 4 and the vertical template are in the same vertical plane. During installation, use a screwdriver or bolt to firmly fix the angle steel on the prefabricated formwork strip 4, ensuring that the high-strength angle iron 2 is tightly connected to the prefabricated formwork strip 4 without looseness, and check whether the installation position of the high-strength angle steel is accurate, and whether it is tightly matched with the prefabricated formwork strip 4 and the sealing rubber pad 5. If there is any inappropriateness, make adjustments in time to ensure the stability and sealing of the entire device.

[0029] Step 6: Install multiple upper fastening bolts 3 rods at the bottom of the original column wood formwork 1 according to the column size. The spacing between the upper fastening bolts 3 rods is no more than 20cm and is evenly distributed. During installation, ensure that the upper fastening bolts 3 rods are perpendicular to the template surface without skew. The two nuts 6 of the upper fastening bolts 3 are pre-fixed on the original column wood formwork 1. By rotating the rotating head 7, the upper fastening bolts 3 are moved up and down for adjustment. According to the gap between the high-strength angle iron 2 and the flexible sealing rubber pad 5 and the ground, adjust the upper fastening bolts 3 of each column bottom one by one. When adjusting, use a wrench to rotate slowly. During the adjustment process, pay attention to the synchronous adjustment of the upper fastening bolts 3 on both sides to avoid the template from being offset due to uneven force.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adaptive column formwork anti-leakage device, characterized in that: include: Original column wood formwork (1), four original column wood formworks (1) are arranged around the steel bar column, prefabricated formwork strips (4) are arranged below the four original column wood formworks (1), and flexible sealing rubber pads (5) are arranged below the prefabricated formwork strips (4); A high-strength angle iron (2), wherein the vertical edge of the high-strength angle iron (2) is parallel to and abuts against the lower end of the original column wood formwork (1), the horizontal edge of the high-strength angle iron (2) is arranged above the prefabricated formwork strip (4), and the horizontal edge of the high-strength angle iron (2) is fixedly connected to the prefabricated formwork strip (4); Upper fastening bolts (3), wherein a plurality of the upper fastening bolts (3) are respectively connected to the original column wood formwork (1) at one side of the steel bar column via nuts (6), and the lower ends of the upper fastening bolts (3) are located above the horizontal side of the high-strength angle iron (2).

2. The self-adaptive column formwork anti-leakage device according to claim 1, characterized in that: The spacing between the plurality of upper fastening bolts (3) is no greater than 20 cm, and the upper fastening bolts (3) pass through two nuts (6) in the vertical direction, and one side of the nuts (6) is fixedly connected to the template.

3. The self-adaptive column formwork anti-leakage device according to claim 2, characterized in that: The horizontal side of the high-strength angle iron (2) is arranged at an end away from the original column wood formwork (1), and the horizontal side of the high-strength angle iron (2) is arranged below the vertical side of the high-strength angle iron (2). A portion of the prefabricated formwork strip (4) is pressed below the cross section of the original column wood formwork (1). The width of the portion of the prefabricated formwork strip (4) away from the original column wood formwork (1) is equal to the width of the horizontal side of the high-strength angle iron (2). The lengths of both ends of the horizontal side of the high-strength angle iron (2) are respectively less than the length of the prefabricated formwork strip (4) and the thickness of a piece of the original column wood formwork (1). The area of ​​the flexible sealing rubber pad (5) is equal to the area of ​​the prefabricated formwork strip (4).

4. The self-adaptive column formwork anti-leakage device according to claim 3, characterized in that: A rotating head (7) is arranged above the upper fastening bolt (3), and the diameter of the rotating head (7) is larger than the inner diameter of the nut (6).

5. The self-adaptive column formwork anti-leakage device according to claim 4, characterized in that: The length from the rotating head (7) of the upper fastening bolt (3) to the nut (6) closest to the rotating head (7) is greater than the distance from the horizontal edge of the high-strength angle iron (2) to the ground.

6. The self-adaptive column formwork anti-leakage device according to claim 5, characterized in that: The original column wood formworks (1) are arranged vertically in pairs, the thickness of the original column wood formworks (1) is 15 mm, and the connection between the original column wood formworks (1) forms an angle with a side length of 15 mm and an angle of 90°.

7. A construction method of the adaptive column formwork anti-leakage device according to any one of claims 1 to 6, characterized in that: The steps include: Step 1: Prepare high-strength angle iron (2), prefabricated formwork strips (4), flexible sealing rubber pads (5), and upper fastening bolts (3) according to design requirements; Step 2: Place the vertical reinforcement accurately on the column position line; Step 3: Clearly pop up the column edge control line on the floor; Step 4: Lay the flexible sealing rubber pad (5) evenly on the floor surface, and the edge of the flexible sealing rubber pad (5) should be aligned with the column edge control line; Step 5: Install the high-strength angle iron (2) on the bottom prefabricated formwork strip (4), leaving a template thickness between the high-strength angle iron (2) and the edge of the prefabricated formwork strip (4); Step 6: Install multiple upper fastening bolts (3) rods at the bottom of the original column wooden formwork (1) according to the size of the column. The spacing between the upper fastening bolts (3) rods should not exceed 20 cm and should be evenly distributed.

8. The construction method of the adaptive column formwork anti-leakage device according to claim 7 is characterized in that: Step 1: Ensure that the specifications and models of the materials meet the requirements and are of qualified quality, inspect the materials, prepare the tools required for construction, check the integrity and accuracy of the tools, ensure that there are no factors that affect the construction quality at the bottom of the steel column, and at the same time, accurately lay out the position line of the steel column on the floor according to the design drawings, including the column side control line, so that the subsequent construction positioning is accurate; Step 2: The spacing, quantity and diameter of the steel bars must comply with the design specifications. Use wire to firmly tie the vertical steel bars to ensure the stability of the steel bar skeleton. During the tying process, pay attention to the joint position of the steel bars should comply with the specification requirements to avoid too many joints in the same section; Step 3: The control line should be clear and accurate, and the width should not be too wide; Step 4: Place the prefabricated template strip (4) on the flexible sealing rubber pad (5) to fit tightly with the flexible sealing rubber pad (5), and use a level to check the flatness of the prefabricated template strip (4); Step 5: During installation, use a screwdriver or bolts to fix the high-strength angle iron (2) to the prefabricated formwork strip (4); Step 6: The two nuts (6) of the upper fastening bolts (3) are pre-fixed on the original column wooden formwork (1). The upper fastening bolts (3) are moved up and down by rotating the rotating head (7). The upper fastening bolts (3) at the bottom of each column are adjusted one by one according to the gap between the high-strength angle iron (2) and the flexible sealing rubber pad (5) and the ground.

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